Credit: Rex USA; WireImage

The 70th Venice International Film Festival is in full swing! The red carpet has been abuzz with appearances by some of Hollywood's biggest stars and up-and-comers, from Sandra Bullock, out to premiere her new film, Gravity, in J. Mendel to Mia Wasikowska, promoting her leading role in Tracks, in Nina Ricci. Click through the gallery below to see else has been hitting the red carpet in the most beautiful city in the world!